Pazera Free MP4 to AVI Converter is a free video converter which converts MP4, M4V and MP4V files into AVI or MPEG. MP4 files are commonly used in mobile players and other devices (iPod, iPhone, PSP), but they are not supported by Windows Media Player and other popular media players. To display MP4 video you need to convert that file into more reliable format, such as AVI or MPG.